let http = require('http')
http.createServer(function (request, response) {
    if (request.url !== '/favicon.ico') {
        response.writeHead(200, {
            'Content-Type':'text/html;charset=UTF-8',
        })
        response.write('hellow, salvater')
        console.log('我在服务里面')
        response.end() // 结束
    }
}).listen(5220)
console.log(
    'server: http://127.0.0.1:520'
)